Carbureter.



J. WIKINCHIN & W. TRANTER.

CARBURETER.

APPLICATION man AUG.6. 19w.

C IVA/w] 61 k J. w. KINCHIN & w. TRANTER.

CARB URETER.

APPLICATION FILED AUG. 6. 1917.

1,280,759. Patented Oct. 8, 1918.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

JOSEPH WILLIAM KINGHIN, 0F BIRMINGHAM, AND WALTER TRANTER, OF NORTH- FIELD, NEAR BIRMINGHAM, nne'nnnn.

CARBURETER.

Specification of Letters Patent.

Patented Oct. 8,1918.

Application filed August 6, 1917. Serial No. 184,687.

To all whom it may concern."

Be it known that we, J os rH WILLIAM KINCHIN, subject of the King of Great'Britain, residing at Birmingham, England, and

WALTER TRANTER, subject of the Kingofone fuel, the lighter fuel, is mixed with .air' and the mixture drawn into the enginenat,

starting and during slow running and the other (heavier) fuel ismixed .with. air,.andthe carbureted mixture is drawn into the en-'- gine during normal running. Gravity valves actuated by the suction. of the engine, and piston valves controlled by centrifugal governors are known for making the change from one fuel 1302110131161 autos matic in certain conditions of the running of the engine and for automatically regulating the size of the mixture ports... r

The ob'ect of our invention is torproTvide a b-i-fuel carbureter in which the .control member is operated to determinenot .only the fuelwhichis supplied to theengine but also the size of the mixture ports, and the size of the air inlet portsfor either fuel.

The invention consists in ahollow moving control member divided into two chambers with separate fuel jets for the different. fuels entering the separate chambers of themembers, the movement of the member simultaneously controlling both themixtureports and air inlets as well as determiningthe fuel whichisinuse.

A convenient embodiment is "a hollow control member dividedby a diaphragm or wall across the same into two separatecompartments, arranged in a hollow body or case into which two fuel connections are made leading from separate sources of supply provided. with any known means such as float chambers for preventing flooding. The fuel connections lead to separate jets or spraying devices which enter the hollow con-- trol member one in each chamber. In the body orgcontainertwo mixture openings are formed, of appropriate size leading toa vapor1zerorlike means and ultimately to theinduction pipe and preferably in the opposite wall we form an airy opening or air openings, preferably two toeach mixture port. Thehollow control, member is similarly provided with a mixture port and air, inlet or inlets approximately corresponding to those in the body .in each of itscompartments. The inlets and ports in the member and the body areso arranged relatively to each other. that as the hollow, control memher is moved in the body either one fuelor the other may be brought into communication .with the induction pipe and. the sizes ofnthe corresponding mixture port and air inlets are regulated as the member moves. Onthe drawingsa .Figure. 1 is an elevation-of the improved carbureter. I

F Fig. 2 isa 272ofFig L w r Fig. 3, is averticalsection on line 3 3 of 'Fig. & is'a view similar to Fig. 2, being a vertical section on the line -22 of Fig. 1,

but showingthe parts in a different position fromthatshown in Fig.2., i In this example of (construction we employ 7 two supply .connectionsa of any suitable vertical sectionalview on line' kind from float chambers bofanyapproved} designto the carburetin chamber 0., From. each" supply is jet to ed e respectively projecting into the carbureter chamberjwhich may convenientlybejcylindrical at this. portionwith the axis of thecylinder at right anglesor approximately so 'to the axes ,of. the jet tubes.- Thenozzle d in the example is the lightfuel nozzle and e the heavy fuel nozzle.

From the carburetingchamber a .connec-@ tion may lead .to. any suitable vaporizing chamber 7 preferably provided with tubes f through which exhaust gases are passed which tubes are in --the.path of the mixture passing from the carbu'reter andthe heating of the fuel resulting from its contact with these tubes on its passage through a heated chamber assists the vaporization of: heavy fuel. -From the vaporizer thefuel mixture passes to the induction pipe. This part of the apparatus as well as to the fuel supply and level controlling means bis not claimed per se andmay follow .on any known lines 'means of a diaphragm or wall 9 which are satisfactory for the purpose, but a suitable vaporizer is we believe an essential part of a satisfactory carbureter for heavy fuel.

The throttle of the carbureter is of the piston type working in the body aforesaid, and we divide this hollow piston throttle 9.

into two separate compartments g g by Into these piston chambers g and g the aforesaid jet tubes d and 6 project .and the piston wall through which they pass has two slots h which allow for the necessary movement of the throttle piston. In the opposite wall of the piston are mixture ports 9' which may be brought into communication with outlets Z on from the carbureter chamher to the vaporization chamber f and induotion pipe of the engine. The outlets [in in the carbureter chamber are preferably in alinement with the jet tubes. In the lower wall of the said chamber and air inlet or inlets are arranged for each supply jet, preferably two for each jet arrangedsymmetrically on each side thereof as shown at n and 0 respectively. The apertures m and 0 on the heavy fuel side are larger than the apertures Z and n on the light fuel side as is" desirable in dealing with a less readily vaporized oil. In the piston wall are snri lar air inlets lettered g and 1" respectively, but the air inlet and the mixture outlet in each piston chamber are set with relation to the same ports in the carbureter chamber so that when the engine is not running the ports in the heavy fuel chamber g are closed, but

those in the light fuel side g are slightly open for starting up. I I As the throttle piston is caused to slide by means of its rod 8 the light fuel ports are first opened while the heavy fuel ports are closed, and when the light fuel ports are full open, the heavy fuel ports are just on the point ofcommencing to open, and on further movement of the piston the light fuel ports close and the heavy fuel ports Open to the desired extent required by the running of the engine. Fig. 2 shows the piston moving to the right with thelight. fuel chamber ports full open and those ofthe heavy fuel chamber on the point of commencing to open while Fig.3 shows the limit of movement in this direction with the light fuel ports closed and the heavy fuel ports prevents failure of the engine during slow running due to impoverished mixture which is likely to occur when the mixture port is throttled down without corresponding regulation of the airinlet.

It will be understood that the size and relation of the various ports on the light fuel side and heavy fuel side will be determined so as to give the best results in practice and our invention is not restricted to any particular arrangement in thisrespect.

We claim l. A carbureter of the type for supplying two kinds of fuel to the engine comprising in combination a carbureter chamber, a movablehollow divided control member therein, means for actuating said member, separate fuel supply means and air inlet means for the separate compartments of the said divided control member and separate mixture outlet ports from said compartments; the

movement of said control member simultaneously controlling both mixture ports and air inlets as well as determining which fuel s su pli to the e g ei 2. A carbureter of the type for supplying two kinds of fuel to the engine comprising in combination a carbureter body having two mixture outlets and two apertures to receive fuel supply .means and a plurality of air in let apertures, ahollow control member which is movable in said body said member being divided into two chambers each having a mixture outlet port, a slot to admit a fuel supply means and air inlet apertures; the ports and inlet apertures of the member and those of the body being arranged so that as the member is actuated to open theports and apertures ofone of the chambers, the ports and apertures ofthe other chamber are si multaneously closing. '7

a 3. A carbureter of the type supplying'two kinds of fuel to the engine, comprising in combination a carbureter body having two mixture outlets and two apertures to. receive fuel supply jets, said jets being directed toward said outlets, and said body having a plurality of air inlet apertures disposed syin metrically about said. jets, a hollow control member movable in. said body and divided, by an inner wall intotwo chambers each chamber havingmixturev outlet passages and apertures to pass a fuelinlet j et 'andair inlet passages,said passages and apertures of'the control member being arranged for coopen ating with those of the body according to the position of thecontrol member. if M A carbureter of the type supplying two kinds of fuel to the engine comprising in con'ibination a carbureter body, .a manifold, two apertures to receive fuel inlet means in the wall opposite said manifoldand air inlet op'eningson eachside of each of said fuel in let apertures, a. sleeve in said body, said sleeve having two mixture outlets in the part toward the manifold, and said sleeve having apertures to receive the two fuel supply means and air inlet openings on each side of said-fuel inlet apertures, said apertures and openings in the sleeve communicating with those of the body, a hollow control member in the form of a sliding plunger within said sleeve, means projecting outside said sleeve and said body for actuating said plunger, said plunger being divided into two chambers each chamber having a mixture outlet and air inlet openings and slots to pass the fuel inlet means which may thus enter each of said chambers, the ports and apertures of said plunger being arranged in relation to those of said sleeve so that when those of one chamber of the member are full open those of the other are closed, and as those of the latter chamber are beginning to open those of the former are beginning to close.

In testimony whereof We aflix our signatures. JOSEPH WILLIAM KINGHIN. WALTER TRANTER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

